MIL-PRF-26H

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MIL-PRF-26H, PERFORMANCE SPECIFICATION, RESISTORS, FIXED, WIRE WOUND (POWER TYPE) GENERAL SPECIFICATION FOR (15 SEP 2006)., This specification covers the general requirements for power type, wire-wound, fixed resistors for use in electrical, communications, and associated equipment. Included are general purpose styles of 5 percent initial resistance tolerance, with power ratings ranging from 3 watts to 240 watts at 25OC, derated to 0 power at 350OC (characteristics N and V) and precision axial lead types of .1(B) percent, .5 (D) percent, and 1 (F) percent initial resistance tolerances with power ratings ranging from 1 watt to 10 watts at 25OC, derated to 0 power at 250OC (characteristic U).

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【英文标准名称】:StandardGuideforSelectingSurfaceGeophysicalMethods
【原文标准名称】:地球物理法选择地表的标准指南
【标准号】:ASTMD6429-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:金属探测器;直流电阻率;地球物理法;地面穿透雷达;管/电缆定位;地震反射;地震折射;自电势;现场特征描述;VLF电磁学;地球物理学;磁学;重力
【英文主题词】:DCresistivity;frequencydomainelectromagnetics;geophysicalmethods;geophysics;gravity;groundpenetratingradar(GPR);magnetics;metaldetector;pipe/cablelocation;self-potential;seismicreflection;seismicrefraction;sitecharacterization;tim
【摘要】:1.1Thisguidecoverstheselectionofsurfacegeophysicalmethods,ascommonlyappliedtogeologic,geotechnical,hydrologic,andenvironmentalinvestigations(hereafterreferredtoassitecharacterization),aswellasforensicandarchaeologicalapplications.Thisguidedoesnotdescribethespecificproceduresforconductinggeophysicalsurveys.Individualguidesarebeingdevelopedforeachsurfacegeophysicalmethod.1.2Surfacegeophysicalmethodsyielddirectandindirectmeasurementsofthephysicalpropertiesofsoilandrockandporefluids,aswellasburiedobjects.1.3Thegeophysicalmethodspresentedinthisguideareregularlyusedandhavebeenproveneffectiveforhydrologic,geologic,geotechnical,andhazardouswastesiteassessments.1.4Thisguideprovidesanoverviewofapplicationsforwhichsurfacegeophysicalmethodsareappropriate.Itdoesnotaddressthedetailsofthetheoryunderlyingspecificmethods,fieldprocedures,orinterpretationofthedata.Numerousreferencesareincludedforthatpurposeandareconsideredanessentialpartofthisguide.Itisrecommendedthattheuserofthisguidebefamiliarwiththereferencescited()andwithGuidesD420,D5730,D5753,D5777,andD6285,aswellasPracticesD5088,D5608,D6235,andTestMethodG57.1.5Toobtaindetailedinformationonspecificgeophysicalmethods,ASTMstandards,otherpublications,andreferencescitedinthisguide,shouldbeconsulted.1.6Thesuccessofageophysicalsurveyisdependentuponmanyfactors.Oneofthemostimportantfactorsisthecompetenceoftheperson(s)responsibleforplanning,carryingoutthesurvey,andinterpretingthedata.Anunderstandingofthemethod''stheory,fieldprocedures,andinterpretationalongwithanunderstandingofthesitegeology,isnecessarytosuccessfullycompleteasurvey.Personnelnothavingspecializedtrainingorexperienceshouldbecautiousaboutusinggeophysicalmethodsandshouldsolicitassistancefromqualifiedpractitioners.1.7ThevaluesstatedinSIunitsaretoberegardedastheguide.Thevaluesgiveninparenthesesareforinformationonly.1.8Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P10
【国际标准分类号】:07_060
【页数】:11P.;A4
【正文语种】:


【英文标准名称】:StandardGuideforMaintainingWarmSeasonTurfgrassesonAthleticFields
【原文标准名称】:运动场草皮暖季维护的标准指南
【标准号】:ASTMF2269-2003
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:维修;季节;草皮;场;体育运动
【英文主题词】:turf;field;maintenance;seasons;athletics
【摘要】:
【中国标准分类号】:Y55
【国际标准分类号】:97_220_10
【页数】:5P;A4
【正文语种】:英语